Call Graph Navigator is a focused VS Code extension for exploring Python call relationships directly inside the editor. It helps you inspect how functions connect, move between callers and callees, and understand code flow without leaving your workspace.

Features

Opens an interactive call graph panel inside VS Code.
Focuses the graph around the current Python function.
Reveals callers and callees from editor commands.
Supports graph refresh when the workspace changes.
Includes configurable graph size and traversal depth limits.

Usage

Open a Python file and place your cursor inside a function or method body.

The easiest way to open the graph is to right click inside the editor and select:

Open Call Graph Navigator

You can also run these commands from the Command Palette:

Open Call Graph Navigator
Focus Call Graph Navigator on Current Function
Refresh Call Graph Navigator Index
Reveal Callers
Reveal Callees

Technology

Call Graph Navigator is built with:

TypeScript
VS Code Extension API
Tree-sitter for parsing
Webview-based graph rendering
esbuild for extension bundling
Mocha and ESLint for testing and code quality

Current Scope

The first supported language is Python. So support for more languages can be added over time.

Roadmap

More updates are planned, including improvements to graph accuracy, navigation, visual layout, and language support. This first release focuses on establishing a clean Python call graph experience inside VS Code. UI related issue and implementation will be worked on soon!

Feedback

Call Graph Navigator is actively being improved. If you notice a bug, have an idea, or want to suggest an improvement, please open an issue on GitHub.